These organization maintain online directories to help you find a practitioner in your area:..
American Association of Naturopathic Physicians
http://www.naturopathic.org/AF_MemberDirectory.asp?version=2
Institute of Functional Medicine
https://www.ifm.org/find-a-practitioner/
Naturopathic Academy of Environmental Medicine
http://www.naturopathicenvironment.com/find-a-provider/